Feeding his cock desires

By boyfriend has been fucking his ass for a long time, much longer than we have been together. We was very open with me even from the beginning and showed me a video of himself fucking a big dildo, much bigger than I have ever seen or used myself. Seeing him take such a big dildo was such a turn on for me and it made me want to explore what else he liked.

I started to slowly ask him about cock and whether he wanted to have a real cock. He said he liked women and didn't find men attractive, I believed him and still do to this day.
However I wasn't satisfied as I know how different it is to have a real cock compared to a dildo inside you. I slowly and persistently kept talking about cock and how it feels and we watched bi sex porn together, I would always make sure to mention how much the guys liked the feeling of cock and how good it looked, while showing him how wet it was making me.

One day I took his favourite strap on dildo and slowly made him suck it while telling him how good it felt and how good he looked with cock in his mouth. He moaned at my words and I used this moment to tell him I want to see him suck a real cock.

He froze for a moment and I said, don't worry it doesn't mean you like men, but think of how it would feel to have a real cock filling your mouth and slutty ass. He was still hesitant so I backed off.

I didn't give up however and over time he started to accept the idea, that he was used a cock whore with an appetite for dick but on interest in men. This was just what I wanted, my man ready to suck and fuck cock for me, it was such a turn on. We even started to watch gay porn together with my encouragement.

How the hardest step, to actually go out and find a nice big cock for my sissy slut......